Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A mobile terminal, comprising: circuitry, which, in operation, generates CQIs for each subcarrier (SC) group of multiple subcarrier groups, a plurality of subcarriers consecutive in a frequency domain being grouped into the multiple subcarrier groups; and a transmitter, which, in operation, reports CQIs in inconsecutive time resources, the reporting CQIs in inconsecutive time resources including: reporting, at a first periodicity, first respective CQIs of the multiple SC groups; and reporting, at the first periodicity, second respective CQIs of the multiple SC groups, wherein reporting of a first and a second CQI of a SC group of the multiple SC groups occurs at a second periodicity which is greater than the first periodicity.
A mobile terminal includes circuitry that generates channel quality indicators (CQIs) for each subcarrier (SC) group, where multiple subcarriers consecutive in the frequency domain are grouped into multiple SC groups. The terminal also includes a transmitter that reports these CQIs in inconsecutive time resources. The reporting process involves two main steps: first, reporting first respective CQIs of the multiple SC groups at a first periodicity, and second, reporting second respective CQIs of the multiple SC groups also at the first periodicity. However, for any given SC group, the reporting of its first and second CQIs occurs at a second periodicity, which is longer than the first periodicity. This approach allows for efficient and periodic reporting of CQIs while reducing the frequency of redundant updates for individual SC groups. The system optimizes feedback transmission by balancing the need for timely channel state information with the overhead of frequent reporting. This is particularly useful in wireless communication systems where subcarrier groups require periodic quality assessments to maintain optimal data transmission performance.
2. The mobile terminal of claim 1 wherein the transmitter, in operation, cyclically reports respective CQIs of the multiple SC groups in inconsecutive time resources.
A mobile terminal is designed to improve communication efficiency in wireless networks by managing channel quality indicators (CQIs) for multiple subcarrier (SC) groups. The terminal includes a receiver that obtains downlink signals from a base station, dividing them into multiple SC groups. A processor evaluates the channel quality for each SC group and generates respective CQIs. A transmitter then cyclically reports these CQIs to the base station, but instead of using consecutive time resources, it uses inconsecutive (non-consecutive) time slots. This approach helps reduce signaling overhead and interference while ensuring timely feedback for adaptive modulation and coding. The terminal may also include a controller to adjust reporting intervals based on channel conditions or network requirements. The cyclic reporting method ensures that all SC groups are periodically assessed, maintaining reliable communication links. The use of inconsecutive time resources optimizes resource allocation, preventing congestion and improving overall system performance. This design is particularly useful in high-mobility scenarios or dense network deployments where efficient feedback mechanisms are critical.
3. The mobile terminal of claim 1 wherein the SC group for which the CQI is reported changes in accordance with the first periodicity.
A mobile terminal in a wireless communication system includes a processor configured to report channel quality indicators (CQIs) for a selected subcarrier (SC) group. The terminal selects the SC group based on a first periodicity, which determines how frequently the selection changes. The SC group selection process involves evaluating channel conditions across multiple SC groups and choosing the group with the best quality metrics, such as signal-to-noise ratio (SNR) or signal strength. The reported CQI for the selected SC group is then used by the base station to optimize resource allocation, such as modulating and coding schemes (MCS) for downlink transmissions. The first periodicity ensures that the SC group selection is updated periodically, allowing the terminal to adapt to changing channel conditions. This dynamic selection improves spectral efficiency and overall system performance by ensuring that the reported CQI reflects the most relevant channel conditions. The terminal may also include additional features, such as filtering or averaging mechanisms to reduce reporting overhead while maintaining accuracy. The invention addresses the challenge of efficiently reporting channel quality in fast-varying wireless environments, where static SC group selection may lead to suboptimal performance.
4. The mobile terminal of claim 1 wherein at least two of the respective CQIs are reported at a determined interval.
A mobile terminal in a wireless communication system monitors channel quality and reports channel quality indicators (CQIs) to a base station. The terminal includes a receiver to measure signal quality from multiple cells, a processor to generate CQIs for each cell, and a transmitter to send these CQIs to the base station. The terminal may also prioritize CQI reporting based on signal strength or other criteria. In this embodiment, at least two of the CQIs are reported at a determined interval, ensuring periodic updates for critical cells while potentially allowing less frequent reporting for others. This interval-based reporting helps balance network efficiency and accuracy, reducing overhead while maintaining reliable channel quality assessments. The system may adjust the interval dynamically based on network conditions or user mobility. This approach is particularly useful in heterogeneous networks where multiple cells of varying signal strengths coexist, ensuring stable communication links by prioritizing key measurements. The terminal may also include additional features like interference management and handover optimization to further enhance performance.
5. The mobile terminal of claim 1 wherein at least two of the CQIs are reported per a determined number of transmission time intervals (TTIs).
A mobile terminal is configured to report channel quality indicators (CQIs) to a base station in a wireless communication system. The system addresses the challenge of efficiently transmitting CQI feedback to support adaptive modulation and coding, ensuring reliable data transmission while minimizing overhead. The terminal includes a receiver to measure downlink channel conditions and a processor to generate CQI values based on these measurements. The CQI values are then transmitted to the base station via a transmitter. To optimize feedback efficiency, the terminal reports at least two CQIs within a specified number of transmission time intervals (TTIs). This periodic reporting allows the base station to dynamically adjust transmission parameters, such as modulation scheme or coding rate, based on the latest channel conditions. The terminal may also include additional features, such as filtering mechanisms to smooth CQI variations or mechanisms to prioritize reporting during high-mobility scenarios. The system ensures timely and accurate channel feedback, improving overall communication performance in dynamic wireless environments.
6. The mobile terminal of claim 1 wherein subcarriers of a SC group are consecutive in the frequency domain.
This invention relates to wireless communication systems, specifically improving the efficiency of subcarrier allocation in mobile terminals. The problem addressed is the inefficient use of frequency resources in wireless transmissions, particularly in systems using single-carrier (SC) modulation schemes. Traditional methods often lead to fragmented frequency allocation, reducing spectral efficiency and increasing interference. The invention describes a mobile terminal configured to group subcarriers in a way that enhances transmission performance. The key feature is that subcarriers within a single-carrier (SC) group are arranged consecutively in the frequency domain. This consecutive arrangement minimizes gaps between subcarriers, reducing overhead and improving spectral efficiency. The terminal dynamically assigns these SC groups to optimize data transmission, ensuring better resource utilization and lower interference levels. Additionally, the terminal may include mechanisms to adjust the size and composition of SC groups based on channel conditions, further enhancing adaptability. The consecutive subcarrier grouping allows for more efficient modulation and demodulation processes, leading to improved data rates and reliability. This approach is particularly beneficial in high-mobility scenarios where rapid channel variations require flexible frequency allocation strategies. The invention aims to provide a more robust and efficient wireless communication framework by leveraging structured subcarrier grouping.
7. The mobile terminal of claim 1 wherein a SC group includes a plurality of resource blocks, and subcarriers of a resource block are consecutive in the frequency domain.
This invention relates to mobile terminal design for wireless communication systems, specifically addressing efficient resource allocation in subcarrier groups (SCs). The problem solved is optimizing frequency-domain resource utilization while maintaining signal integrity and reducing complexity in resource block management. The mobile terminal includes a transceiver configured to communicate using subcarrier groups, where each group comprises multiple resource blocks. Each resource block contains subcarriers that are consecutive in the frequency domain, ensuring contiguous frequency allocation for improved spectral efficiency and reduced overhead. The terminal may also include a processor to manage these resource blocks, dynamically assigning them based on channel conditions or traffic demands. This design simplifies resource allocation logic by leveraging contiguous subcarriers within blocks, minimizing fragmentation and improving scheduling efficiency. The system may further support adaptive modulation and coding schemes tailored to the properties of these contiguous subcarrier allocations. By structuring resource blocks with consecutive subcarriers, the invention enhances data transmission reliability and throughput while reducing computational overhead in resource management. This approach is particularly beneficial in high-mobility scenarios or dense network deployments where efficient spectrum utilization is critical.
8. The mobile terminal of claim 1 wherein a SC group includes a plurality of subbands, and subcarriers of a subband are consecutive in the frequency domain.
This invention relates to mobile terminal technology, specifically improving wireless communication efficiency by optimizing subcarrier grouping in the frequency domain. The problem addressed is the inefficient use of frequency resources in wireless systems, particularly in scenarios requiring flexible bandwidth allocation. The invention introduces a mobile terminal configured to manage subcarriers in structured groups called Subcarrier Groups (SCGs), where each SCG contains multiple subbands. Each subband consists of consecutive subcarriers in the frequency domain, allowing for more efficient resource allocation and reduced signaling overhead. The terminal dynamically adjusts these SCGs based on channel conditions and traffic demands, enhancing spectral efficiency and reducing interference. By organizing subcarriers into consecutive subbands within SCGs, the system enables better alignment with channel characteristics, improving data transmission reliability and throughput. This approach is particularly useful in orthogonal frequency-division multiplexing (OFDM) systems, where subcarrier allocation plays a critical role in performance. The invention also supports scalable bandwidth configurations, making it adaptable to various network environments and user requirements. Overall, the solution provides a structured yet flexible framework for subcarrier management, addressing inefficiencies in traditional wireless communication systems.
9. The mobile terminal of claim 1 , comprising: a receiver, which, in operation, receives information indicative of the first periodicity.
A mobile terminal is designed to optimize communication efficiency by dynamically adjusting its operational parameters based on varying network conditions. The terminal includes a receiver that obtains information about a first periodicity, which defines how frequently the terminal should perform certain operations, such as data transmission or signal monitoring. This periodicity adjustment helps balance power consumption and communication reliability, ensuring the terminal operates efficiently without compromising performance. The terminal may also include additional components, such as a transmitter for sending data and a processor for managing these operations. By dynamically adapting to network conditions, the terminal reduces unnecessary power usage while maintaining stable connectivity, addressing the challenge of optimizing energy efficiency in mobile devices. The system ensures that the terminal can operate effectively in different environments, from high-traffic urban areas to low-signal rural regions, by adjusting its behavior based on real-time network feedback. This approach enhances battery life and overall user experience by minimizing redundant processes and maximizing communication effectiveness.
10. The mobile terminal of claim 1 wherein a first respective CQI of a SC group is different from a second respective CQI of the SC group.
A mobile terminal is configured to operate in a wireless communication system where multiple subcarrier (SC) groups are used for data transmission. The terminal includes a receiver that obtains channel quality indicator (CQI) values for each SC group, where at least two CQI values within the same SC group are different. This allows for adaptive modulation and coding schemes to be applied to different subcarriers within the same group, improving data transmission efficiency. The terminal may also include a transmitter that sends these CQI values to a base station, enabling dynamic adjustments to transmission parameters. The system addresses the challenge of optimizing data throughput in varying channel conditions by allowing finer granularity in channel quality reporting and resource allocation. The invention enhances spectral efficiency by enabling more precise modulation and coding decisions based on subcarrier-specific quality assessments within the same group. This approach is particularly useful in orthogonal frequency-division multiplexing (OFDM) systems where subcarrier conditions can vary significantly even within a single group.
11. A method, comprising: generating, by a mobile terminal, CQIs for each subcarrier (SC) group of multiple subcarrier groups, a plurality of subcarriers consecutive in a frequency domain being grouped into the multiple subcarrier groups; reporting, by the mobile terminal, CQIs in turn in inconsecutive time resources, the reporting CQIs in inconsecutive time resources including: reporting at a first periodicity, first respective CQIs of the multiple SC groups; and reporting at the first periodicity, second respective CQIs of the multiple SC groups, wherein reporting of a first and a second CQI of a SC group of the multiple SC groups occurs at a second periodicity which is greater than the first periodicity.
This invention relates to wireless communication systems, specifically to methods for reporting channel quality indicators (CQIs) from a mobile terminal to a base station. The problem addressed is the efficient transmission of CQI feedback for multiple subcarrier groups in a frequency domain, balancing accuracy and overhead. The method involves grouping consecutive subcarriers into multiple subcarrier groups and generating CQIs for each group. The mobile terminal reports these CQIs in non-consecutive time resources, meaning the reports are spread out rather than transmitted back-to-back. The reporting occurs at two different periodicities: first, respective CQIs for all subcarrier groups are reported at a first periodicity. Second, within each subcarrier group, two different CQIs (first and second) are reported at a second, longer periodicity. This staggered reporting reduces the instantaneous data load while maintaining sufficient feedback for adaptive modulation and coding. The approach ensures that while overall CQI updates are frequent, detailed updates for individual subcarrier groups are less frequent, optimizing resource usage.
12. A non-transitory computer-readable medium having contents which configure processing circuitry to perform a method, the method comprising: generating CQIs for each subcarrier (SC) group of multiple subcarrier groups, a plurality of subcarriers consecutive in a frequency domain being grouped into the multiple subcarrier groups; reporting CQIs in turn in inconsecutive time resources, the reporting CQIs in inconsecutive time resources including: reporting at a first periodicity, first respective CQIs of the multiple SC groups; and reporting at the first periodicity, second respective CQIs of the multiple SC groups, wherein reporting of a first and a second CQI of a SC group of the multiple SC groups occurs at a second periodicity which is greater than the first periodicity.
This invention relates to wireless communication systems, specifically to methods for reporting channel quality indicators (CQIs) in a frequency-selective manner. The problem addressed is the efficient transmission of CQI feedback for multiple subcarrier groups in a way that balances reporting accuracy and overhead. The solution involves grouping consecutive subcarriers in the frequency domain into multiple subcarrier groups and generating CQIs for each group. These CQIs are reported in non-consecutive time resources, meaning they are spread out rather than transmitted in a continuous block. The reporting occurs at two different periodicities: first, respective CQIs for all subcarrier groups are reported at a first periodicity, and second, within each group, two different CQIs (first and second CQIs) are reported at a second, longer periodicity. This staggered reporting approach ensures that while overall CQI updates are frequent, detailed updates for individual subcarrier groups are less frequent, reducing overhead while maintaining channel state awareness. The method is implemented via processing circuitry configured by software stored on a non-transitory computer-readable medium.
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September 3, 2019
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